Huntington Park, CA Accessory Structures: Garage Conversions (2026)

Article 26 of Chapter 3 treats a garage conversion as an ADU conversion, which § 9-3.2640 defines as an additional dwelling unit constructed from non-livable spaces within existing structures such as garages, boiler rooms, passageway, and storage rooms. This record covers conversion to an ADU in the City of Huntington Park. The permit is a minor development permit under § 9-3.2630, ministerial and without a hearing. On a lot with a single-family dwelling, no more than one ADU constructed from existing space is allowed, in addition to one detached ADU and one JADU.

In a multi-family structure, conversions are limited to portions not currently used as livable space and cannot exceed 25% of the existing units, rounded down with a minimum of one. Under § 9-3.2650(5)(b), no setback is required for an ADU or JADU created within an existing living area or accessory structure; additional square footage shall conform to setback standards. Item 6(c) allows a 150 square foot expansion of an ADU created within converted space to accommodate ingress and egress. Parking has two parts. Item 7(d) says that when a garage, carport, covered parking structure, or uncovered parking space is demolished or converted to an ADU, replacement of off-street parking for the primary dwelling unit is not required.

Item 7(b)(iii) also removes any parking requirement for an ADU that is part of the existing primary residence or an accessory structure. The one physical obligation is in item 8: when a garage is converted to an ADU, the driveway approach must be removed and curbs and gutters replaced. Converted ADUs on a single-family lot are not required to have a separate utility connection, and no connection fee or capacity charge is required (item 9(c)).